Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ernest E Lack, MD

Anatomic Pathology & Clinical Pathology Physician in Washington, DC · enumerated 2005.

Data current as of Jul 11, 2026 · sourced from CMS NPPES

National Provider Identifier

1023008562

Verified

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Registry record

Entity type Individual (Type 1)

Name Ernest E Lack

Credential MD

Sex Male

Practice address Washington, DC, 20010

Phone (202) 877-6190

Fax (202) 877-3820

Enumeration date Oct 26, 2005

Last updated in NPPES Dec 2, 2010

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License MD25987 (DC) Primary

MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Ernest Lack's NPI record?

Cross-check NPI 1023008562 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1023008562 active?

Yes — as of the latest NPPES snapshot, NPI 1023008562 is active (record last updated 2010-12-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-12-02.